Canon Colorado 1630 Operation Manual page 264

Calibrate the printhead
NOTE
The calibration can take quite some time, around 30 minutes. Wait until the printer is
finished with the calibration. When the active job disappears and [Start] is no longer
greyed out, the calibration is finished.
After you finish
The calibration can be successful or it can fail.
When a message appears that the calibration has failed, perform printhead calibration again.
When the calibration fails again, perform automatic maintenance three times without automatic
nozzle optimization. For more information, see
Perform printhead calibration again.
When the calibration is still not successful, contact your local Service representative.
264 Chapter 7 - Improve quality
Start automatic maintenance on page
172.